Table 3.

Overall Survival and Progression-Free Survival by Treatment Arm

IGS	Overall Survival					Progression-Free Survival
	Median (years)		Hazard Ratio	95% CI	P	Median (years)		Hazard Ratio	95% CI	P
	RT	RT/PCV				RT	RT/PCV
IGS-9	5.5	12.8	2.18	1.06 to 4.50	.0349	3.6	12.8	3.18	1.54 to 6.59	.0018
IGS-17	1.8	5.4	2.21	0.87 to 5.60	.0962	1.0	2.2	2.12	0.85 to 5.30	.1086
IGS-18	1.1	1.4	1.43	0.66 to 3.12	.3669	0.4	0.8	2.51	1.10 to 5.69	.0280
IGS-23	1.1	1.0	0.89	0.39 to 2.02	.7771	0.6	0.5	0.98	0.44 to 2.18	.9678

Abbreviations: IGS, intrinsic glioma subtype; PCV, procarbazine, lomustine, and vincristine; RT, radiotherapy.